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Unsymmetrical chiral salen Schiff base ligands: Synthesis and use in metal-based asymmetric epoxidation reactions

✍ Scribed by Marie F. Renehan; Hans-Jörg Schanz; Eoghan M. McGarrigle; Cormac T. Dalton; Adrian M. Daly; Declan G. Gilheany

Book ID
108211460
Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
550 KB
Volume
231
Category
Article
ISSN
1381-1169

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Unsymmetrical salen ligands: Synthesis a
Unsymmetrical salen ligands: Synthesis and use in chromium mediated asymmetric epoxidation
✍ Adrian M. Daly; T. Cormac Dalton; Marie F. Renehan; Declan G. Gilheany 📂 Article 📅 1999 🏛 Elsevier Science 🌐 French ⚖ 242 KB

Chiral non-racemic salen ligands with two different salicylidene moieties can be synthesised via trapping of the intermediate mono-salicylidene using (+)-O,O'-dibenzoyl-D-tartaric acid. The chromium complexes of these ligands can be used in asymmetric epoxidation of alkenes. The presence of tripheny